Sphaeroderus bicarinatus
(LeConte, 1853)
Two-ridged False Snail-eating Beetle
Sphaeroderus bicarinatus is a ground beetle in the Carabidae, commonly known as the two-ridged false snail-eating . It is a brachypterous, mostly found in forested of the southeastern United States. Despite its , it has been observed preying on snails as well as Lepidoptera caterpillars and pupae.
Pronunciation
How to pronounce Sphaeroderus bicarinatus: /sfɛəroʊˈdɪərəs baɪˌkærɪˈneɪtəs/
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Identification
The specific epithet 'bicarinatus' refers to two ridges, likely on the or pronotum, distinguishing it from . As a member of the Sphaeroderus, it shares the tribe Cychrini's characteristic body form adapted for on mollusks. Brachypterous (short-winged) condition renders flightless, a trait useful for field identification.
Images
Habitat
Inhabits coniferous, deciduous, and mixed forests near rivers, brooks, or seashore. Moist woodland environments with access to water sources appear to be preferred.
Distribution
Southeastern United States: Alabama, Georgia, North Carolina, South Carolina, and Tennessee.
Diet
Predatory. Has been observed feeding on snails, Lepidoptera caterpillars, and pupae.
Behavior
are mostly and brachypterous (flightless).
Ecological Role
in forest floor , contributing to regulation of snail and lepidopteran .
Similar Taxa
- Other Sphaeroderus speciesShare tribe Cychrini and -level ; S. bicarinatus distinguished by two-ridged character referenced in specific epithet.
- Other Carabidae in CychriniSimilar mollusk- adaptations; -level and -level characters separate S. bicarinatus.
More Details
Nomenclature note
The 'false snail-eating ' distinguishes this from true snail-eating beetles (likely other ), though it does consume snails.